Make sure to update to the latest version of QuarkXPress first, as your issue might already be fixed there.

Since 1997 QuarkXPress updates are FREE OF CHARGE: (Example: An update is a minor version jump, e.g. 6 to 6.5 but not 6.5 to 7.
A major version jump, e.g. v4 to v10 or v2016 to v2017, is called an upgrade. Upgrades are not free of charge.)

--------------------------------------------------------------------------------------------------------•The last update of QuarkXPress 2015 was: For Mac: June 2017 release (internal version number 11.2.0.6)http://www.quark.com/support/downloads/ ... px?fid=382For Windows: September 2015 release (internal version number 11.1)http://www.quark.com/Support/Downloads/ ... px?fid=318(Last full installer* is/was 11.1 for Windows and 11.2.0.5 for Mac)Since Nov 30, 2018, Quark will not provide any further updates for this version and also does not provide any support for it anymore.

•The last update of QuarkXPress 6 (released 2003) was:
QuarkXPress 6.52 Quark will not provide any further updates for this version and also does not provide any support for it anymore.

•The last update of QuarkXPress 5 (released 2002) was:
QuarkXPress 5.01 Quark will not provide any further updates for this version and also does not provide any support for it anymore.

•The last update of QuarkXPress 4 (released 1997) was:
QuarkXPress 4.11 Quark will not provide any further updates for this version and also does not provide any support for it anymore.

•The last update of QuarkXPress 3 (released 1990) was:
QuarkXPress 3.32r5 Quark will not provide any further updates for this version and also does not provide any support for it anymore.

The above links provide you with the latest patch, you might have to download updates beforehand.
For other updates try searching at http://downloads.quark.com
Please note that we do not offer downloads for QuarkXPress 6 (or before) anymore.

2) See whether your version of QuarkXPress is supported on your operating system

Choose the right forum and post there
In our user-to-user forums there are many experts who give excellent tips and advice - often within hours, so choose the appropriate forum and post your question.

External Resources
You might also want to consult independent external resources like Planet Quark, X-Ray Magazine (both English), or HDS and XPress-Upgrade.com (last two in German). There are many useful tips, background information and best practices listed there.

* Full installer means, you can use this installer to update an existing installation or install fresh. Light installers need an existing installation to be present. So if you reinstall fresh, choose the latest full installer for the major version you want to install. Afterwards use Auto Updater (or download the light installer manually) to update to the latest sub-version.